Air-drill hanger.



L. STAS.

AIR DRILL HANGER.

APPLICATION FILED OQT. 2a. 1914.

l 1 50,3 1 2; Patented Aug. 17, 1915.

WITNESSES: IN VENTOR A TTOB/VE Y terra ns srarasrarnnr ora ion.

mm STAS, OF madam, wAsHINGroN.

7 device in use; and

. r a- 13311.15. HANGER.

To all whom it may concer Be it known that I, LIVIN STAs, a citizen of the United States, and a resident of Tacoma, in the county of Pierce and State of Washingtomhave invented certain new and useful Improvements in Air-Drill of which the following is a speciing a drill-while it is in use, and is especially adapted for use withan air-drill, though it may also be used with an electric or with a ratchet-drill.

The objects of this invention are to pro vide a device whereby the drill may be firmly held in place while in use and'whereby, when the material being drilled is pierced, the drill and its apparatus will be held steadily in place and will not be suddenly pushed through the hole just drilled, thereby saving the breakage of many drills.

Other objects are to reduce the cost of drilling holes by reducing the number of men needed to handle the air-drill and reducing the time needed to drill through the material.

I attain these and other objects by the devices, mechanisms, and arrangements illustrated in the accompanying drawing, in which Figure 1 is a side elevation showing my Fig. 2 is a side elevation of the hanger, showing a part thereof in section to reveal its construction.

Similar numerals of reference refer to similar parts throughout the several views.

One of the difliculties incident to drilling holes'with an air-drill is found in the fact that when the material is pierced by the drill the men controlling it have to be very alert to prevent its sudden passage through the hole thus breaking it oif in the hole. For this reason it is found necessary at present to have two or three men handle each drill, and even then many drills are broken and great care must be exercised by the men. It is with a view of overcoming this objec tion that I have invented the following described hanger which converts the hand airdrill practically into a drill-press.

A post 1 is secured in any handy way to the work to be drilled, or' to the table or other surface. This post 1 has an arm 2 extending from it at right angles, said arm being adjustable to any desired point in the Specification of Letters iatent.

cal socket. A hole the feed screw 19,

Patented Aug. 17,1915.

Application filed October 28, 1914. Serial No. 868,965.

p'o'stand to extend in anyldirection therefrom. p The hanger 3 to which the drill is attached is provided with an opening 4 in one edge,

said opening forming a pair of jaws adapted to receive the said arm 2 between them. A set screw 5 passes-throughthe upper jaw 6 and engages the upper surface of the arm 2, thus drawing the lower jaw 7 into engagement with the lower edges of the arm 2. The lower jaw 7 is formed slightly V-shaped as shown. The hanger is also provided with a handle 8 in a convenlent position there-.

on. The part 7 of the hanger extends downward and has a screw-threaded extension 9 at its lower end. A semi-spherical recess or socket 10 of suitable diameter is formed in said downward extension 9. A nut 11 is screwed on said extension 9 and has a complementary semi-spherical recess or-socket 12 formed in it, said parts being such that when the nut is screwed into place the two sockets 10 and 12 adjoin and form a spheri- 13 leads through the nut 11 to the socket 12. A spherical ball 14 fits in said socket and is free to turn therein. The ball 14 has a screw-threaded hole extending up into it. A union 15 has a thread ed L upward extension screwed into said hole in the ball 14, and also has a similar screw-threaded hole in its lower end. Thescrew drill enters the hole in the union 15.

The air-drill 17 is provided with handles 18 and with a feed screw 19, whereby the apparatus and drill 20 are pressed down or are raised up.

It is evident from the drawings and de scription that the drill is held from any longitudinal motion except as it is fed in either direction by turning the handles of and that when the resistance of the material being drilled ceases (because the drill has pierced the material) the apparatus will remain in'its position and the drill can be withdrawn at once by reand socket joint. It is evident that my ap- 'paratus renders the operation of alr-drlllmg as safe and economical as in the usual dr1ll press and yet can be used in an un- 16 at the upper end of the air- Having described my linvention,

claim is f v n In a, drill hangom the combination with an arm; a frame clamped to said 'arm; a

ball andsocket joint formed in said frame;

a drilling machine having a longitudinal" Q n v 7' 1,150,312

.ife d; and a union piece roinoyably screwed.

into said ball and socket joint and to the 1 0 drilling machine s V v: "I o LIVIN sTAs.

Wi'fnsses': u

" M. F. McNErL JARVIS BAUMAN.

Copies of this patent may be obtained foi' five gents eachQby a idi'es sing die Commissioner of Patents,

7 V v -Washington,1).0. I 

